Influence of solvent on the surface morphology and optoelectronic properties of a spin coated polymer thin films

Purpose: The aim of this paper was to investigate changes in surface morphology and optoelectronic properties of MEH-PPV thin films. Thin films were prepared using spin coating method. Design/methodology/approach: The changes in surface topography was observed by the atomic force microscope AFM. The results of thin films roughness have been prepared in the software XEI. The UV/VIS spectrometer was used to investigate absorbance of the obtained thin films. Findings: Results and their analysis allow to conclude that the solvent, which is an important factor in spin coating technology has an influence on surface morphology and optoelectronic properties of MEH-PPV thin films. Practical implications: Known MEH-PPV optoeletronic properties and the possibility of obtaining a uniform thin film show that it can be a good material for optoelectronic and photovoltaic application. Originality/value: The paper presents some researches of MEH-PPV thin films deposited by spin coating method deposition on glass BK7. A MEH-PPV solution was prepared using three different solvents: chlorobenzene, chloroform and pyridine.